I have recently reinstalled vim and I noticed that the Spell checking is working very slowly. Whenever I do a z= on an incorrectly spelled word, Vim takes a good 4-5 seconds to show the spelling suggestions which is really really long. This used to happen almost instantly before.

It used to work fine before and I have no idea what happened. I checked this with bare vim too using vim -u NONE and it is still slow. So, I guess I can rule out this being an issue with my settings or with the plugins. And, Every thing else is behaving normally.

Any ideas on why this is happening and what can be do to speed this up? I am using the recent version of Vim for windows.

  • 1
    Are you sure you do not have several languages in set spelllang?, or maybe several methods in set spellsuggest?
    – grochmal
    Jul 3 '16 at 0:58
  • 1
    I have set spelllang=en and set spellsuggest=best. I had the same setup even before but that was never slow. Jul 3 '16 at 0:59
  • Are you spell files /usr/share/vim/vimfiles/spell/* (not clue where that is on windows, sorry) on the same drive? Maybe on a network drive?
    – grochmal
    Jul 3 '16 at 1:36
  • 1
    @ChristianBrabandt Its not for one word. It was that way for every word. The suggestions were taking a really long time. Jul 14 '16 at 12:37
  • 2
    In case anyone is still running into similar problems in 2019, this open issue was very helpful for me and gives a comprehensive description of a flavor of this issue.
    – RTbecard
    Jan 11 '21 at 15:29

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